Steam generator and superheater.



Patented Nov. 28, I899.

H. GRUSE. STEAM GENERATOR AND SUPERHEATER.

(Application filed Oct. 1, 1898.) (No Model.) 3 Sheets-Sheet l.

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Patented Ndv. 28, I899.

H. CRUSE. STEAM GEREBATDR AND SUPERHEATER.

(Appli ti filed Oct. 1, 1893-) (No Model.) on a Sheets-Sheet 2.

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No. 638,006. Patented Nov. 28, I899.

H. CRUSE. STEAM summon AND SUPERHEATEB. (Application md Oct. 1, 1898.) (No Model.) 7 3 Sheets-Sheet 3.

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UNITED STATES PATENT 50mins.

HENRY ORUSE, OF MANCHESTER, ENGLAND.

STEAM GENERATOR AND SUPERHEATER.

SPECIFICATION forming part of Letters Patent No. 638,006, dated November 28, 1899.

Application filed October 1, 1898. nerial No. 692,435. (No model.)

To aZZ whom it may concern."

Be it known that LHENRY CRUSE, engineer, a subject of the Queen of Great Britain, residing at Blakeley, in the city of Manchester, England, have invented a new and useful Apparatus for and Method of Superheating Steam in Generating the Same in Connection with Steam-Boilers, (for whichI have applied for a patent with provisional specification in Great Britain, No. 5,103, hearing date March 2, 1898,) of which the following is a specification.

My invention relates to improvements in the method of and apparatus for generating steam, and has chiefly for its object to economically produce dry superheated steam or steam gas adjusted in temperature to the requirements of the work.

The invention is applicable to Lancashire, Cornish, Marine, Babcock, and other types of tubular or semitubular steam-boilers by modifications of design of the apparatus to suit To accomplish this and to effect method of generating steam in'connection with a steam-boiler, consisting of a series of wide-bore pipes suitably connected and forming a superheatin g apparatus,which is placed in the inner or outer flue or in the uptake or downtake of the boiler or boilers or otherwise, according to the type of boiler employed,

or it may be independently heated or fired. Inside these superheater-tubes other and smaller tubes or pipes are placed, through which thewater flows, and the inner or water tubes or pipes are thereby surrounded or jacketed by the superheated steam or steam in process of being superheated by the action of the hot gases from the boiler furnace or furnaces or other source of heat. By this means a system of circulation may be provided for the water of the boiler, in that the water flowing through the water-tubes inside the superheater can be taken or conducted from the lower part of the boiler at any convenient point and returned thereto in the steam or upper water space with a greatly-increased temperature, the conversion from water to steam being thereby greatly facilitated. When required, however, I may pass the feedwater through this inner system of waterpipes within the superheater or in alternation.

It will be seen from the foregoing that I prefer the water to travel in the same direction as the steam through the various pipes of the superheater, and that the heat given to the steam by the surrounding gases from the furnace is in turn given off to the water in the internal tubes, and that as the water proceeds in its course it approximates more and more to the heat of the steam. To enable this approximation to be adjusted or maintained at the desired degree, I may arrange to connect the feed-water pipe at any convenient point or points in the run of the superheater apparatus, and suitable valves and connections may be employed to enable either the feed-water or the water from the boiler to be separately out 01f from the superheater.

Although I prefer the form of the superheater,together with the internal water-tubes, to be circular in cross-section, oval or other cross-sectional design maybe employed in the construction of my apparatus and other variations in detail may be made in the general form, dimensions, and pesition of the superheating and generating apparatus and in the character and number of the various sections and in the arrangement of the requisite valves for directing the water in the inner tubes and for directing the superheated steam either back into the boiler or directly to the work required of it without departing from the peculiar character of the invention.

That the invention may be the better understood I will, with the aid of the accompanying drawings, proceed to describe its application to one type of boilerto wit, the Lancashire boiler.

In the drawings,,Figure 1 represents a longitndinal section of a Lancashire boiler fitted with my invention, and Fig. 2 shows a plan View and sectional plan thereof, while Fig. 3 represents a sectional elevation of the apparatus at the back end of the boiler; and Fig. 4: shows an enlarged section, and Fig. 5 an enlarged plan, of certain details for joining up the apparatus in series.

The same letters indicate corresponding parts wherever they occur.

The steam to be superheated is taken from any convenient point within the boiler-as, say, at I-by employing an antipriming 001* lector, whence it passes through the bend G into the first superheater-tube A. It then travels down this tube through the bottom box B, up the tube A, and in like manner through the whole series of superheaters, emerging by three-way pipe E at top of tube A and then proceeds, by pipe F and stopvalve F, to main steam-pipe H. The water is tapped at blow-off tube R, passing through stop-cock R and mud-catcher R for convenience and thence by pipe P to the superheater, which it enters by three-Way pipe D, situated in the case shown just below the steam-inlet valve 0. From this point the water flows within the inner tubing of the apparatus until the required length of the superheater having been traversed the water leaves the same by the three-way pipe E and enters the steam-space of the boiler at any convenient pointas, say, through the back plateand may be carried by pipe a suitable distance inside/[he boiler, as may be desired and is well understood, or the water may pass from three-way pipe E by pipe to front of the boiler and enter by the feed-inlet. At suitable points stop-cocks, such as M, M, and M are fixed in circuit and through all or any one of these the feed-water supply to the boiler is connected from the branch pipe S with the boiler-water in the internal tubing N. It will thus be seen that the essential feature of my invention consists in forming a jacket of steam to the water-tubes contained therein, whereby I obtain a superheater which, on the one hand, is controllable by the water passing through it, while, on the other hand, I am enabled to heat the feed-water passing through superheater or superheat the water from the boiler for circulatory purposes at will.

The enlarged views, Figs. at and 5, show the means I employ to form the top cap for joining together individual superheating and in tern al water-tubes and for making the various water-tube connections in series, and which arrangement constitutes an important and special detail of my invention. In all types of boilers or steam-generators resembling the Lancashire boiler I prefer thus to join up the members of my superheater apparatus in series and arrange the same as illustrated; but there are types of tubular boilers wherein it may be more convenient to arrange isolated individual members, forming separate superheaters, each of which may communicate with the water-space and steam-space, as will be readily understood, for which purpose the tubes may be curved, if desired.

I am aware that superheaters of various forms have already been employed, and feed and circulatory water has been heated in pipes by having superheated steam passing through the water-pipes by means of internal steam-tubes; but these are entirely different to and, indeed, the reverse of my method and apparatus, and I lay no claim thereto; but

What I do claim as my invention, and desire to secure by Letters Patent, is

In a steam-generating device, the combination of a superheater-chamber situated in the furnace-flue, with the circulating water-pipe connected above and below to the boiler and passing through said superheater, and a steam-pipe connecting the superheater with the steam-space of the boiler, substantially as described.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

HENRY ORUSE.

Witnesses:

WILLIAM GADD, GEORGE FREDERICK GADD. 

